Home / 208,002.20-312,003.30-83,432.60

Finding the Fourth Proportional to 208,002.20, 312,003.30 and 83,432.60

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Solution

The fourth proportional to 208,002.20, 312,003.30 and 83,432.60 is: 125,148.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,002.20 : 312,003.30 = 83,432.60 : x
  2. Step 2: Convert to fraction form
    208,002.20/312,003.30 = 83,432.60/x
  3. Step 3: Cross multiply
    208,002.20x = 312,003.30 × 83,432.60
  4. Step 4: Simplify right side
    208,002.20x = 26,031,246,527.58
  5. Step 5: Solve for x
    x = 26,031,246,527.58/208,002.20
  6. Step 6: Final answer
    x = 125,148.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.